Demountable rim



Jan. 3, 1928.-

P. M. MILLER DEMOUNTABLE RIM Filed June 22. 1921 Patented Jan. 3,1928.

PHILIP iM. MILLER, or BROOKLYN, NEW vonk.'

DEMOUNTABLE RIM.

l Appncation mea June 22,

My present invention has reference, in its broad aspect, to improvements in demountable rims, and more particularly it is my purpose to provide a. rim which maybe readily set up in `an operative position with respect to a tire carried thereby, 'and with respect to the wheel to which the rim is lapsed to releasethe tire.

may be quickly and con-` from the wheel and col- To this and other en ds I have provided improved'means for holding lthe elements of segmental rim firmly in an operative position with respect to a tire, such `means tive to resist any tendency of the segments or sections of the rim to breakor spring apart when in use upon a wheel to which it is applied, although when the rim is removed from 'the wheel a simple operationonly is necessary to collapse theisegments or sections and remove the rimfrom the tire.

Among the principal advantages 'p of my invention may be briefly defined the following; first, the sections or segments of my rim, when set up, form a' perfect circularstructure, the tire engaging surface of which is applied; and which veniently removed free from indentations lor elevations; second,

mere bouncing` of the tire when defiated is sufficient to remove the rim, and mere pressurel of the foot upon my improved toggle member is sufficient to assemble my rim on a tire; third, the sections of my .rim resist any tendency to break apart or collapse when. in use, rand are free from lost motion or looseness between the sections; fourth, edgewise displacement of the sections one with respect to the others is prevented, and' fifth, the number of parts is reduced to a minimum with consequent saving in cost of manufacture.

The structural elements employed to accomplish the above and other results and objects will be hereinafter more fully described in detail and specifically pointed outv in the claims appended hereunto and forming a part of this specification.

In the drawings wherein is shown. an embodiment of my invention v Figure l is a side elevation of my rim yshowing a tire mounted thereon, and illustrating in dotted lines the positions ofthe sections and toggle when collapsed,

Figure 2 Ais aplan view and development Y of my rim showing its inner periphery, same being partly in section,

F igureB is a section taken on the line A3-3 beingrcompletely effecl 1921; serial 116.479,55?.v i

of Figure looking in the direction "ofthe arrows, and

Figure 4 is a yview similar to Figure 2 showing the outer periphery or tireseating surface of vthe rim. f

Like characters of referencerare used to .i

designate like on similar-parts throughout the several vviews of the drawings. Y

j Inl forming the circular body' which confr stitutes my tire rim a pluralityl ofy sections or segments Vare utilized. In my 'present' Y embodiment three sections form the rim and are designated (5), (6)` and (7) each being arcuate andl doubly flanged. The section (5) is the longest section and, issomewhat lessthan 180 of a circle, and is termed the main section. The remaining' sections (6) and-'(7) complete thebalance of the circular' rim when setup. y f Each sectionis provided onits respective peripheral edges with a flange, designated X and ..Y. .The portion between the fianges constitutes the channel in vwhich the tire Dg' is seated. The section (5)]isfformed with an opening B for receiving-the iniiating stern of the inner tube of the tire mountedon therim. ,7, j f. v

Inorder to form a permanent -hinge connection between the ends of section (5K) and the Vadjacent ends of sections (6) and (7),

a transverse slot (l1) is provided in each ofv the ends of section (5), into which is adapted to fit the latterally bent Tsshaped head (10) of a plate (9), one of 'whichis4 attached to the adjacent end of each ofV the sections .(6) and (7). Inorder to permanently hold the heads (10) in the slots (11) to form the permanent hinge connection, 'a'plate (12) is secured, as by spot-welding, to each of the respective ends of section (5) with the end extensions (13) of the plates (12)r enga-ging in the necks (10a) of the T-shaped heads of the plates (9) thereby to confine the same in the slots (1l) to prevent their withdrawal. By these means the respective permanent hinge joints @are attained without'forming' indentations or elevations in the tire engaginOf surface of the rim' since the'heads (10) seat in the slots (11) iiush with the tire engaging surface of the rim. Furthermore rim issetup by a toggle arrangement designated .generally by the numeral (8). The toggle (8) is formed with a, (14) and (15?). nently and hingedly connected with'the section (6) while the plate (15a) has-a .detach-f able connection with the section, (7). vThe hinge connection betweenmtheplate (14)v and 4section is similar .to that above described for -hingedly connecting the sections (6) and (7) with the section (5). Tothis l end'fafslot '(16)"is provided in the free end lT-shaped head (15) of the lplate reception inL aslot (22) in plate (7) 1n the manner wwhiclrwill lbe' hereinafter described. The permanent hinge connection betweentlie toggle plates y(14) and (15a) is formed by seating-the Tlshaped head (19) of plate'y ('14): in `slot (20) of plate (15a) Where Yit l isv permanently retained by fa plate (20a) after the manner heretofore Adescribed in conjunction with ther hingel connection of the toggleE (8)"v with the section (6). However the interconnectedY ends are curved to conform to a seat Ainthe section (7) so that a-smooth surfaceI Will be provided in assembly. Theffree end of theA plate (151) isprovided with a 'head' 21 lwhiclris adapted to entera slot (22) of section (7),- and a platejl'(23) isaprovided about'the slotV 22 againstn whichY theend fof the plate (15a) abuts to reta-iii theend in position; to form a y detachable connection.

From the foregoing-it will be'apparent that for lremoving thetire Ythe same. is first deflated and thel toggle placed in the positio'nf'shownn=Figu=re1 indottedvlines. In

pair Ofplates. The..plate. (1.4) .is perma.-..

erly assembled to retain' the tire thereon;- 'l

)Vhile inthe `foregoing there has beenail# lustrated 'and described such; combination and arrangement of elements as yconstitute the preferred embodiment ofV my invention,

it is nevertheless desiredjto emphasize the -fact fthat interpretation ofthe invention should only be conclusive when madeain the light ofthe subjoi-nedclaims.

1 claim 1': A `tire rim comprsingpivotedl segments i eaclrproiided with an aperture adjacent its free end, and toggle Anie'i'nl'iei-sA formed 1 with a4 head secured inthe aperture of one-seg; ment to provide a fixed povotand a foot-to ydctachably interlock with theapertlu'e in the abutting segment and freely separable therel v I rroiir.

2. A tire rim comprising pivoted segments each provided Awith an aperture adjacent its y free end, toggle members having an elengatedpivotand slot connection', `a 'pivoting head upononeof said members disposed in the aperture of one segment, a plate upon said segment for securing said headagainst removal to-form a iixed larly disposed y member adapted tov detachably enga-ge the aperture inthe abutting segment. f

PHILIP-- M.A Minima pivot, and ari-angry foot upon tne other ltoggle 

